CN117411246A - New energy vehicle wiper motor - Google Patents
New energy vehicle wiper motor Download PDFInfo
- Publication number
- CN117411246A CN117411246A CN202311371644.7A CN202311371644A CN117411246A CN 117411246 A CN117411246 A CN 117411246A CN 202311371644 A CN202311371644 A CN 202311371644A CN 117411246 A CN117411246 A CN 117411246A
- Authority
- CN
- China
- Prior art keywords
- worm wheel
- shaft
- rotating
- new energy
- energy vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005611 electricity Effects 0.000 claims abstract description 12
- 238000004804 winding Methods 0.000 claims abstract description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 5
- 239000010687 lubricating oil Substances 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 abstract description 10
- 229910052804 chromium Inorganic materials 0.000 abstract description 2
- 239000011651 chromium Substances 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000007747 plating Methods 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/21—Devices for sensing speed or position, or actuated thereby
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/38—Control circuits or drive circuits associated with geared commutator motors of the worm-and-wheel type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a new energy vehicle wiper motor, which belongs to the technical field of new energy vehicle accessories, is mainly arranged under the windshield of a motor vehicle to drive a wiper to swing back and forth, and comprises a shell, a rotating shaft and a worm wheel, wherein the tail end of the shell is in threaded connection with a servo power device, and the surface of the shell is subjected to chromium plating treatment to avoid corrosion. The power device is internally provided with a stator winding, and the stator winding can generate a rotating magnetic field when passing through three-phase electricity, and the stator winding is similar to a three-phase asynchronous motor to drive a rotor to move. And the side part of the shell is provided with an end cover, and the end cover is provided with a speed sensor for detecting the output rotating speed of the speed reducer. The power device improves output power through the speed reducer, on the other hand, the speed sensor can detect the rotating speed of the worm wheel and display the rotating speed through the display screen arranged in the cab, so that a customer can automatically compensate the moving speed of the windscreen wiper according to own habits, and the use requirement of the user is met.
Description
Technical Field
The invention relates to the technical field of new energy automobile accessories, in particular to a new energy automobile wiper motor.
Background
The conventional windscreen wiper usually adopts a motor as a power source so as to remove rainwater or foreign matters on a windscreen of a vehicle body, wherein the output torque is too small due to the fact that the rotating speed of the universal motor is too high, and a worm gear reducer is also required to be adopted to improve the output power.
In a rainy day, a common vehicle can only switch between a single operation, a slow operation, a medium operation and a fast operation. The gear is less, the difference between the working frequencies of the windscreen wiper is larger, the rainfall is relatively small when the windscreen wiper works fast, but the rainfall is relatively too large when the windscreen wiper is switched to the next gear speed, so that the use habit of each user cannot be well matched.
Disclosure of Invention
Therefore, the invention provides the novel energy vehicle wiper motor, and the speed of the whole wiper motor is regulated in a closed-loop control mode, so that the problem that the prior art is not matched with the use habit of a user due to the fact that the wiper motor is regulated by a gear is solved.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention discloses a new energy vehicle wiper motor, which is arranged under motor vehicle windshield and comprises:
the servo power device is arranged at the tail end of the shell, an end cover is arranged on the side face of the shell, lubricating oil is sealed in the shell, and a speed sensor is arranged on the end cover;
the rotary shaft is externally sleeved with a rotor, the rotor rotates in the servo power device, and a motor controller is arranged at the end part of the servo power device;
the worm wheel is sleeved on a worm wheel shaft at the center, the worm wheel shaft is movably inserted in the shell, a worm meshed with the worm wheel is arranged at the bottom of the shell, and the worm is fixedly sleeved on the rotating shaft;
wherein the motor controller is used for inputting three-phase electricity into the servo power device to form a rotating magnetic field and adjusting the rotation frequency of the rotating magnetic field, and the speed sensor detects the rotation speed of the worm wheel.
In one possible implementation, the worm wheel, the rotary shaft and the rotor are integrally formed, and the winding coil is bound on the rotor.
In one possible implementation, the housing surface is chromed.
In one possible implementation, the motor controller includes:
the printed circuit board is annular and sleeved on the rotating shaft, and is provided with an inductive switch;
the three-phase electrode is welded on the printed circuit board, and the servo power device is connected with the three-phase electrode through a frequency converter;
the Hall element is opposite to the rotating shaft and used for measuring and calculating the rotating number of turns of the rotating shaft, and when the inductive switch is closed and the measuring and calculating number of turns of the rotating shaft is equal to the reduction ratio of the worm wheel to the worm, the rotating shaft stops rotating.
In one possible implementation manner, the worm wheel and the worm wheel shaft are integrally formed, two ends of the worm wheel shaft are open, the inside of the worm wheel shaft is hollow, the revolving shaft is a hollow shaft, and meanwhile, the tail end of the revolving shaft is communicated with the tail end of the worm wheel shaft through a rotary joint.
In one possible implementation, the worm wheel shaft and the rotating shaft are internally provided with two single spiral blades, and the two single spiral blades synchronously rotate along with the rotating shaft and the worm wheel shaft to drive fluid to flow between the worm wheel shaft and the rotating shaft.
In one possible implementation, the head end of the worm wheel shaft is located at the front end of the vehicle body, the head end of the worm wheel shaft is located at the rear end of the vehicle body, and the worm wheel shaft is connected with a gas collecting funnel through a rotary joint, and the gas collecting funnel is arranged at the front part of the vehicle body.
On the basis, the head end of the rotary shaft and the head end of the worm wheel shaft are inserted into the water tank.
The invention has the following advantages:
the invention adopts a closed-loop control mode, the motor controller is used for converting two-phase electricity into three-phase electricity and inputting the three-phase electricity into the servo power device to form a rotating magnetic field, thereby driving the rotor to rotate and realizing stepless regulation on the rotating speed of the rotor by regulating the frequency of the three-phase electricity, the speed sensor is positioned at the position of the worm wheel and is used for detecting the rotating speed finally output by the speed reducer, and thus, the control device (the motor controller) and the controlled object (the motor and the speed reducer) can have forward action and also have reverse connection, namely, the output has stronger disturbance resistance and higher control precision on the input, and can automatically compensate according to the habit of a user, thereby solving the problem that the prior art is not matched with the use habit of the user by regulating the motor of the wiper through the gear.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those of ordinary skill in the art that the drawings in the following description are exemplary only and that other implementations can be obtained from the extensions of the drawings provided without inventive effort.
The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the invention, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present invention, should fall within the ambit of the technical disclosure.
Fig. 1 is an exploded view of a wiper motor of a new energy vehicle provided by the invention;
FIG. 2 is a perspective view of a motor controller provided by the present invention;
fig. 3 is an assembled perspective view of the new energy vehicle wiper motor provided by the invention;
FIG. 4 is a perspective view of a single helical blade provided by the present invention;
in the figure: 1, a shell; 2 servo power device; 3, a rotating shaft; a rotor 4; 5 worm wheel; 6, a speed sensor; 7, a motor controller; 71 a printed circuit board; 72 three-phase electrode; 73 hall elements; 8 worm; a 9 worm wheel shaft; 10 end covers; 11 single helical blades; 12 gas collection funnels.
Detailed Description
Other advantages and advantages of the present invention will become apparent to those skilled in the art from the following detailed description, which, by way of illustration, is to be read in connection with certain specific embodiments, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the new energy vehicle wiper motor disclosed by the invention is mainly installed under a motor vehicle windshield to drive a wiper to swing back and forth, and comprises a shell 1, a rotating shaft 3 and a worm wheel 5, wherein the tail end of the shell 1 is in threaded connection with a servo power device 2, and the surface of the shell 1 is subjected to chromium plating treatment so as to avoid corrosion. The power device 2 is internally provided with a stator winding, and the stator winding can generate a rotating magnetic field when passing through three-phase electricity, and the stator winding is similar to a three-phase asynchronous motor to drive the rotor 4 to move. And the side of the casing 1 is provided with an end cover 10, and the end cover 10 is provided with a speed sensor 6 for detecting the output rotating speed of the speed reducer. In addition, lubricating oil is encapsulated in the speed reducer, namely the shell 1 and the end cover 10, and the speed reducing mechanism is immersed in the lubricating oil for internal engagement transmission, so that abrasion can be effectively reduced, heating value and noise are reduced, and the service life of the wiper motor is prolonged.
In this embodiment, as shown in fig. 1, the speed reducing mechanism includes a turbine 5 and a worm 8, and the turbine 5 and the worm 8 are engaged and driven, so that the output torque of the high-speed servo power device 2 can be effectively increased, so as to drive the wiper to move. The worm 8 is coaxially connected with the rotary shaft 3 in a transmission way, a rotor 4 is sleeved outside the rotary shaft 3, the rotor 4 is positioned in the stator winding and rotates under the action of a rotating magnetic field, and the worm 8 is driven to rotate together.
Specifically, the center of the worm wheel 5 is sleeved on the worm wheel shaft 9, the worm wheel shaft 9 is movably inserted in the machine shell 1, a worm 8 meshed with the worm wheel 5 is installed at the bottom of the machine shell 1, the worm 8 is fixedly sleeved on the rotating shaft 3 and drives the worm wheel 5 to rotate, and therefore the purpose of improving output power is achieved. In addition, be provided with motor controller 7 in servo power device 2's tip, motor controller 7 is used for inputting the three-phase electricity into servo power device 2 and forms rotating magnetic field, and adjust the rotation frequency of rotating magnetic field from this, simultaneously, motor controller 7 still can link to each other with the converter, thereby adjust the frequency of three-phase electricity, in order to change rotating magnetic field's rotational speed, realize then servo power device 2's stepless regulation, on the other hand, because speed sensor 6 can detect the rotational speed of worm wheel 5, and show through the display screen of installing in the driver's cabin, the customer just can compensate the movement speed of wiper according to the custom of oneself voluntarily, in order to satisfy user's operation requirement.
In some embodiments, optionally, in order to improve the overall structural strength of the device, the worm wheel 5, the rotating shaft 3 and the rotor 4 are integrally formed by adopting a casting or forging process, a winding coil is bound on the rotor 4, an electromagnetic force is generated when a rotating magnetic field acts on the winding coil, and under the action of a commutator, the electromagnetic force pushes the rotor 4 to rotate, and then drives the rotating shaft 3 to rotate, so as to provide power for the windscreen wiper.
In some embodiments, as shown in fig. 2, the motor controller 7 includes a printed circuit board 71, a three-phase electrode 72 and a hall element 73, wherein the hall element 73 is capable of measuring a magnetic field, and is used for changing an applied alternating current into an alternating direct current voltage or changing the direct current voltage into an alternating voltage through a coil, and by measuring an alternating frequency in a cumulative manner, the number of turns of the rotation shaft 3 can be measured, and the hall element 73 is mounted on the printed circuit board 71 and is opposite to the rotation shaft 3, and since the swinging frequency of the wiper corresponds to the number of turns of the rotation of the speed reducer, when the inductive switch is turned off and the number of turns of the rotation shaft 3 measured by the hall element 73 is equal to the reduction ratio of the worm wheel 5 to the worm 8, the rotation of the rotation shaft 3 is stopped, so that the blocking of the vision of a driver when the wiper is turned off can be avoided. On the other hand, the printed circuit board 71 is annular in shape and is sleeved on the rotating shaft 3, and is provided with a sensing switch which plays a role of delaying in cooperation with the hall element 73, so that the wiper is prevented from staying on the front windshield. In addition, a three-phase electrode 72 is soldered to the printed circuit board 71, the three-phase electrode 72 converts two-phase electricity into three-phase electricity by a converter, and the servo power unit 2 is connected to the three-phase electrode 72 by a frequency converter, thereby adjusting the rate of the rotating magnetic field inside the servo power unit 2.
In some embodiments, the worm wheel 5 and the worm wheel shaft 9 are integrally formed, two ends of the worm wheel shaft 9 are open, the interior is hollow, the rotating shaft 3 is also of a hollow shaft structure, and the tail end of the rotating shaft 3 is communicated with the tail end of the worm wheel shaft 9 through a rotary joint, so that the overall quality of the equipment can be reduced, the operation efficiency is improved, and meanwhile, fluid can be introduced into the rotating shaft 3 and the worm wheel shaft 9, so that the effects of reducing the temperature and prolonging the service life of a coil are achieved.
On the basis of the above embodiment, an alternative solution is proposed, as shown in fig. 3 and 4, in which two single spiral blades 11 are installed inside the worm wheel shaft 9 and the rotating shaft 3, and the two single spiral blades 11 rotate synchronously with the rotating shaft 3 and the worm wheel shaft 9 to drive and promote the fluid to flow between the worm wheel shaft 9 and the rotating shaft 3. Further, the head end of the worm wheel shaft 9 is located at the front end of the vehicle body, the head end of the worm wheel shaft 9 is located at the rear end of the vehicle body, the head end of the worm wheel shaft 9 is connected with the gas collecting funnel 12 through a rotary joint, and the gas collecting funnel 12 is arranged at the front part of the vehicle body. Therefore, when the vehicle body runs, the air collecting hopper 12 can collect a large amount of air and compress the air into the worm wheel shaft 9 and the rotating shaft 3, and meanwhile, the single-screw blades 11 can also promote the air flow rate to be improved, so that the air cooling mode is utilized to cool the speed reducer and the servo power device 2, the coil can be prevented from being overheated and burnt out, the temperature of the speed reducer can be effectively reduced, the evaporation quantity of lubrication is reduced, the deformation caused by the overheating of the worm wheel 5 and the worm 8 is avoided, and the defects of gluing, tooth surface pitting and the like are further caused.
In another alternative scheme, the head end of the revolving shaft 3 and the head end of the worm wheel shaft 9 are inserted into a water tank, water or cooling liquid is filled in the water tank, as two single helical blades 11 are arranged in the worm wheel shaft 9 and the revolving shaft 3, the worm wheel shaft 9 and the revolving shaft 3 rotate to respectively drive the two single helical blades 11 to rotate, and when the single helical blades 11 rotate, a kinetic energy water head (the water head refers to the kinetic energy, potential energy and pressure energy of unit mass fluid in the flowing condition) can be generated, so that the cooling liquid is driven to circulate in the worm wheel shaft 9 and the revolving shaft 3, namely, a water cooling mode is adopted to cool a motor, thereby achieving the technical effect of cooling equipment.
While the invention has been described in detail in the foregoing general description and specific examples, it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.
Claims (10)
1. The utility model provides a new energy vehicle wiper motor installs under motor vehicle windscreen, its characterized in that includes:
the servo power device comprises a shell (1), wherein a servo power device (2) is arranged at the tail end of the shell, an end cover (10) is arranged on the side surface of the shell, lubricating oil is encapsulated in the shell, and a speed sensor (6) is arranged on the end cover (10);
a rotor (4) is sleeved outside the rotary shaft (3), the rotor (4) rotates in the servo power device (2), and a motor controller (7) is arranged at the end part of the servo power device (2);
the worm wheel (5) is sleeved on a worm wheel shaft (9), the worm wheel shaft (9) is movably inserted in the machine shell (1), a worm (8) meshed with the worm wheel (5) is mounted at the bottom of the machine shell (1), and the worm (8) is fixedly sleeved on the rotary shaft (3);
the motor controller (7) is used for inputting three-phase electricity into the servo power device (2) to form a rotating magnetic field and adjusting the rotating frequency of the rotating magnetic field, and the speed sensor (6) is used for detecting the rotating speed of the worm wheel (5).
2. The new energy vehicle wiper motor according to claim 1, wherein the worm wheel (5), the rotating shaft (3) and the rotor (4) are integrally formed, and the rotor (4) is bound with a winding coil.
3. The new energy vehicle wiper motor according to claim 1, wherein the surface of the housing (1) is chrome plated.
4. The new-energy vehicle wiper motor according to claim 1, wherein the motor controller (7) includes:
the printed circuit board (71) is annular and sleeved on the rotary shaft (3), and is provided with an inductive switch;
the three-phase electrode (72) is welded on the printed circuit board (71), and the servo power device (2) is connected with the three-phase electrode (72) through a frequency converter;
the Hall element (73) is opposite to the rotating shaft (3) and is used for measuring and calculating the rotating number of turns of the rotating shaft (3), and when the inductive switch is closed and the Hall element (73) measures and calculates that the rotating number of turns of the rotating shaft (3) is equal to the reduction ratio of the worm wheel (5) to the worm (8), the rotating shaft (3) stops rotating.
5. The new energy vehicle wiper motor according to claim 1, wherein the worm wheel (5) and the worm wheel shaft (9) are integrally formed, and both ends of the worm wheel shaft (9) are open and the inside is hollow.
6. The new energy vehicle wiper motor according to claim 5, wherein the rotating shaft (3) is a hollow shaft, and the tail end of the rotating shaft (3) is communicated with the tail end of the worm wheel shaft (9) through a rotary joint.
7. The new energy vehicle wiper motor according to claim 6, wherein two single spiral blades (11) are installed inside the worm wheel shaft (9) and the rotating shaft (3), and the two single spiral blades (11) synchronously rotate with the rotating shaft (3) and the worm wheel shaft (9) to drive fluid to flow between the worm wheel shaft (9) and the rotating shaft (3).
8. The new energy vehicle wiper motor as set forth in claim 7, wherein the head end of the worm wheel shaft (9) is located at the front end of the vehicle body, and the head end of the worm wheel shaft (9) is located at the rear end of the vehicle body.
9. The new energy vehicle wiper motor according to claim 8, characterized in that the worm wheel shaft (9) is connected with a gas collecting funnel (12) through a rotary joint, the gas collecting funnel (12) being arranged at the front part of the vehicle body.
10. The new energy vehicle wiper motor as set forth in claim 7, further comprising a water tank, wherein the head end of the rotating shaft (3) and the head end of the worm wheel shaft (9) are inserted into the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311371644.7A CN117411246B (en) | 2023-10-23 | 2023-10-23 | New energy vehicle wiper motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311371644.7A CN117411246B (en) | 2023-10-23 | 2023-10-23 | New energy vehicle wiper motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117411246A true CN117411246A (en) | 2024-01-16 |
| CN117411246B CN117411246B (en) | 2024-05-14 |
Family
ID=89492064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311371644.7A Active CN117411246B (en) | 2023-10-23 | 2023-10-23 | New energy vehicle wiper motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117411246B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875342A (en) * | 2009-04-30 | 2010-11-03 | 浙江关西电机有限公司 | Electric windshield wiper of automobile and control method thereof |
| CN110040109A (en) * | 2019-05-08 | 2019-07-23 | 上海禹点电子科技有限公司 | A kind of speed-adjusting and control system of windscreen wiper |
| CN112653264A (en) * | 2020-11-21 | 2021-04-13 | 肖光正 | Hollow motor |
-
2023
- 2023-10-23 CN CN202311371644.7A patent/CN117411246B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875342A (en) * | 2009-04-30 | 2010-11-03 | 浙江关西电机有限公司 | Electric windshield wiper of automobile and control method thereof |
| CN110040109A (en) * | 2019-05-08 | 2019-07-23 | 上海禹点电子科技有限公司 | A kind of speed-adjusting and control system of windscreen wiper |
| CN112653264A (en) * | 2020-11-21 | 2021-04-13 | 肖光正 | Hollow motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117411246B (en) | 2024-05-14 |
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